diff --git a/package.json b/package.json
index 01678ee..1e4236a 100644
--- a/package.json
+++ b/package.json
@@ -62,7 +62,7 @@
   },
   "devDependencies": {
     "@types/node": "^26.1.1",
-    "c8": "^11.0.0",
+    "c8": "^12.0.0",
     "concurrently": "^10.0.3",
     "eslint": "^9.39.5",
     "fastify-tsconfig": "^3.0.0",